Inherited wars
Obama took office with large U.S. deployments in Iraq and Afghanistan. He ordered a temporary surge in Afghanistan, paired with a timetable for transition, and later reduced forces. The formal Iraq mission ended in 2011, though U.S. forces returned as ISIS seized territory.
These decisions reflected tension between limiting open-ended commitments and responding to security deterioration. Neither war produced a simple conclusion during the presidency.
Counterterrorism
The administration authorized the operation that killed Osama bin Laden in Pakistan in 2011 and expanded drone strikes against suspected militants. It prohibited certain interrogation practices and sought, unsuccessfully, to close the Guantánamo detention facility.
Civil-liberties advocates challenged secrecy, civilian casualties, targeted killing, surveillance, and the legal framework of a geographically dispersed conflict.
Diplomacy and multilateral action
The administration negotiated the Joint Comprehensive Plan of Action to limit and monitor Iran’s nuclear program, restored diplomatic relations with Cuba, supported the Paris climate agreement, and emphasized alliances and international institutions.
Its “pivot” or rebalance to Asia combined diplomatic engagement, military posture, and the Trans-Pacific Partnership, which Congress did not approve.
The Arab Spring and its aftermath
Popular uprisings created difficult choices. NATO intervention helped remove Muammar Qaddafi in Libya but was followed by instability. Obama resisted large-scale intervention in Syria even after declaring chemical-weapons use a red line, while supporting some opposition forces and later military action against ISIS.
The resulting record is debated between critics who see excessive restraint and those who see continued militarization. The administration itself described leadership as a combination of force, diplomacy, economic strength, partnership, and values.